From 644ebc40efa699e770a714fb2a2f00e829fa2802 Mon Sep 17 00:00:00 2001
From: Tom Deakin <tom.deakin@bristol.ac.uk>
Date: Mon, 24 Oct 2016 16:22:35 +0100
Subject: [PATCH] Verify reduction result to 8 decimal places

---
 main.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/main.cpp b/main.cpp
index 7e0dd22..f717d88 100644
--- a/main.cpp
+++ b/main.cpp
@@ -273,9 +273,12 @@ void check_solution(const unsigned int ntimes, std::vector<T>& a, std::vector<T>
     std::cerr
       << "Validation failed on c[]. Average error " << errC
       << std::endl;
-  if (errSum > epsi)
+  // Check sum to 8 decimal places
+  if (errSum > 1.0E-8)
     std::cerr
       << "Validation failed on sum. Error " << errSum
+      << std::endl << std::setprecision(15)
+      << "Sum was " << sum << " but should be " << goldSum
       << std::endl;
 
 }